Article hanging system, slidable wire holder, detachable wire holder, wire hook and wire gripper

ABSTRACT

An article hanging system capable of easily changing an exhibit position and an exhibit height of an article such as a goods exhibited in a shop, a hanger and a display shelf comprises a ceiling rail assembly, a wire holder slidably retained to the ceiling rail assembly, a wire hanging down from the wire holder, a gripper fixably attachable at a desired position along the wire, a wire holder attached to a lower end of the wire and a floor rail assembly to which the wire holder is slidably retained. Each of the rail assemblies comprises longitudinal rails extending in a longitudinal direction (the Y-direction) and lateral rails slidable with respect to the longitudinal rail as being spanned between the longitudinal rails. Each of the wire holders are slidable along the lateral rail.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a Divisional Application of U.S. applicationSer. No. 11/427,596, filed Jun. 29, 2006, which is a DivisionalApplication of U.S. application Ser. No. 10/843,959, filed May 11, 2004now U.S. Pat. No. 7,316,380.

FIELD OF THE INVENTION

The present invention relates to an article hanging system for use in adisplay space such as a shop window, which is capable of hanging anarticle such as a goods exhibited in a shop, a hanger and a displayshelf at a desired position. And, it further relates to components whichconstitute the article hanging system, such as a wire holder forslidably and detachably holding a wire to a rail, a wire hook forhooking a wire to the wire holder and a wire gripper for gripping anarticle at a desired position (height) along a wire.

BACKGROUND OF THE INVENTION

In a display space such as a shop window, various types of goods areexhibited by hanging on hangers or by setting on display shelves. Goodsare arranged on hangers or display shelves so as to attract interest ofpedestrians.

Conventionally, in such a display space, an arrangement of the goods isnot changed for a predetermined period once the goods are arranged,because it is hard to alter positions and heights of the display shelvesand the hangers. Consequentially, a change in the arrangement of thegoods in a short cycle will attract more interest of pedestrians.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, an object of the presentinvention is to provide an article hanging system capable of easilychanging an exhibit position and an exhibit height of an article such asa goods exhibited in a shop, a hanger and a display shelf. And, anotherobject of the present invention is to provide components whichconstitute the article hanging system, such as various types of wirehangers, wire hooks and wire grippers.

An article hanging system according to the present invention comprises:a ceiling rail installed on a ceiling of a building; a wire holderslidably retained to said ceiling rail; a wire hanging down from saidwire holder; and a gripper fixably attachable at a desired positionalong said wire, said gripper having an engagement portion with anarticle, wherein said ceiling rail comprising: a plurality oflongitudinal rails extending in a direction (a longitudinal direction)and arranged on the ceiling; and a lateral rail slidable with respect tosaid longitudinal rails and spanned between said longitudinal rails,said wire holder is capable of sliding along said lateral rail.

In the present invention, it is preferable that the article hangingfurther comprises: a floor rail installed on a floor of a building; anda holder for holding a lower end of said wire, said holder slidablealong said floor rail.

According to the present invention, an article can be exhibited atvariable positions in a X-direction, a Y-direction and a Z-directioninside a three-dimensional space between the ceiling and the floor onwhich the longitudinal rail and the lateral rail are installedrespectively, having a height equal to a length of the wire held fromthe ceiling. The exhibit position of the article in the X-Y plane can beeasily changed by sliding the lateral rail with respect to thelongitudinal rail or sliding the wire holder along the lateral rail.And, the exhibit height of the article in the Z-direction can be alsoeasily changed by sliding the gripper along the wire. Accordingly,articles in a display space can be rearranged easily and quickly.

A slidable wire holder according to the present invention comprises: aslider slidable along a rail; and a wire hook attached to said slider;wherein said slider is provided with a body having an attachment portionat which said wire hook is attached, and, rollers assembled to said bodyso as to roll along the rail, wherein each of said rollers is composedof a first roller member and a second roller member, said first rollermember being a single-piece having a flanged roller portion and an axisportion, said second roller member being a single-piece having a flangedroller portion and a sleeve portion, and said first roller member andsaid second roller member being assembled by fitting said axis portionof said first roller member into said sleeve portion of said secondroller member.

According to the present invention, since each roller is made as asingle-piece such that the axis portion is integrated with the rollerportion, it becomes possible to raise a withstanding load about threetimes as large as that of a conventional roller constructed by a rollerand a bearing.

A detachable wire holder according to the present invention comprises: arail engagement member slidable along a rail and also detachable fromthe rail by rotating with respect to the rail by a predetermined angle;and a wire hook attached to said rail engagement member; wherein saidrail engagement member comprises a shaft formed on one end thereof withan attachment portion for said wire hook, a head formed on another endof said shaft and engaged with a hollow engagement portion of the rail,and a rotation preventive portion formed under said head, and said railengagement member further comprising: a locknut threadedly engaged withsaid shaft; a washer fitted onto said shaft and arranged between saidlocknut and said head; and a bias member which biases said washer towardsaid head, wherein said detachable wire holder assuming following threestates:

a lock state where said locknut is threadedly advanced closer to saidhead onto said shaft so that the engagement portion of the rail will betightly held between said head and said washer, whereby said railengagement member is unslidably and undetachably held to the rail; aslidable state where said locknut is threadedly advanced away from saidhead onto said shaft for a predetermined distance, whereby said railengagement member is slidably held to the rail and unrotatable withrespect to said rail due to said rotation preventive portion; and adetachable state where said locknut is threadedly advanced further awayfrom said head onto said shaft for a predetermined distance so that saidrail engagement member will be allowed to rotate with respect to therail, whereby said rail engagement member will be detached from thehollow engagement portion of the rail.

According to the present invention, the wire holder is slidable alongthe rail and fixable at a desired position therealong. Further, the wireholder is attachable and detachable at any position of the wire. Inaddition, the rotation preventive portion will prevent the wire holderfrom being detached off the rail accidentally.

A wire hook according to the present invention comprises: a sleevemember formed on one end thereof with a attachment portion at whichanother member is attached; a hook to which a wire is hooked, said hookbeing formed on another end of said sleeve member; and a slippingpreventive member capable of opening and closing a space between adistal end of said hook and said sleeve member for preventing the wirefrom being slipped through the space; wherein said slipping preventivemember is a V-shape lever, and biased outwardly like a spring bycontacting with an outer surface of said sleeve member at proximal endsthereof, resulting in a pointed end of said slipping preventive membercontacting with a distal end of said hook so as to close the space.

According to the present invention, accidental detachment of the wirefrom the wire hook can be prevented by a simple mechanism.

A wire gripper according to the present invention comprises: a grippersleeve having a gripping mechanism fixably attachable at a desiredposition along a wire; a hook to which an article is hooked, said hookbeing coupled to said gripper sleeve; and a hook cover for closing aopening of said hook, said hook cover temporarily being locked to saidgripper sleeve.

In the present invention, since a specified tool such as a hexagonwrench or a key is required for detachment of the hook cover from thegripper sleeve, it is difficult that an article hooked to the hook isdetached therefrom easily, whereby a theft-proof gripper can beprovided.

A wire gripper according to the present invention comprises: a grippersleeve having a gripping mechanism fixably attachable at a desiredposition along a wire; and a hook to which an article is hooked, saidhook being coupled to said gripper sleeve, said wire gripper furthercomprising: an outer ring mounted to a lower end of said gripper sleeve;an inner ring mounted to an upper end of said hook; and a bush arrangedbetween said outer ring and said inner ring for holding said inner ringso as to rotate with respect to said outer ring, said bush made of alow-friction material.

In the present invention, when an article hooked to the gripper is soheavy that a load applied to the gripper is high, rotating the hook(which is mounted to the inner ring) with respect to the gripper (whichis mounted to the outer ring) will cause the wire gripper to hold thearticle stably.

An article hanging system according to another embodiment of the presentinvention comprises: a rail installed on a wall or a ceiling of abuilding; a wire holder slidably retained to said rail; a wire hangingdown from said wire holder; and a gripper fixably attachable at adesired position along said wire, said gripper having an engagementportion with an article; wherein said rail has a groove opened in ahorizontal direction, a sliding portion of said wire holder being fittedtherein, and said wire holder is slidably and detachably retained tosaid rail groove by engagement of the sliding portion thereof with saidrail when said wire is strained downwardly, and said wire holder isdetached from said rail groove by rotating said wire holder after saidwire is loosened.

According to the present invention, the wire is strained downwardly dueto a weight of an article hung by the wire. In other words, once anarticle is hung by the wire, it is hard to detach the wire holder fromthe rail, thus safe hanging is realized.

Here, the rail groove may be opened in a right horizontal direction oran obliquely horizontal direction.

In the present invention, it is preferable that said rail has the groovein which the sliding portion of said wire holder can be rotated, therail groove being opened in a horizontal direction, said wire holder canbe detached from said rail when said sliding portion thereof is sorotated in said rail groove that a longitudinal direction of saidsliding portion is aligned with a longitudinal direction of said railgroove, and said wire holder cannot be detached from said rail when saidsliding portion thereof is so rotated in said rail groove that alongitudinal direction of said sliding portion is aligned perpendicularto the longitudinal direction of said rail groove.

According to the present invention, since the sliding portion is formedas above described shape, a specified means is not required forretaining the wire holder to the rail undetachably but slidably. And,the wire holder can be easily attached and detached to the rail by asimple operation such as a rotation of the sliding portion thereof.

A wire holder according to another embodiment of the present inventioncomprises: a slider slidable along a rail and detachable from the railby rotating with respect to the rail by a predetermined angle; and awire hook attached to said slider; wherein said slider is provided witha sliding portion fitted into a groove of the rail, and a shaft portioncoupled said sliding portion to said wire hook, said sliding portionhaving a length larger than a width of a opening of the rail groove anda width slightly shorter than the width of the opening of the railgroove, said sliding portion rotatable in said rail groove, said shaftportion has a diameter slightly smaller than the width of the opening ofthe rail groove, said shaft portion rotatable in said rail groove.

According to the present invention, an article hanging system capable ofeasily changing an exhibit position and an exhibit height of an article(for example, a goods exhibited in a shop, a hanger or a shelf) isprovided. In addition, a wire holder capable of easily sliding along arail as well as attaching and detaching to the rail, a wire hook havinga detachment-proof mechanism, a wire gripper having a theft-proofmechanism or a rotating mechanism can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a drawing schematically showing an article hanging systemaccording to the present invention.

FIG. 2 is a drawing showing the channel rail and the double-channelrail, FIG. 2(A) is a cross-sectional drawing showing the channel railand FIG. 2(B) is a cross-sectional drawing showing the double-channelrail.

FIG. 3 is a drawing showing a shape of a slider of the T-shape holder,FIG. 3(A) is an elevation drawing of the slider and FIG. 3(B) is a sidecross-sectional drawing of the slider.

FIG. 4 is a drawing showing a structure of a detachable wire holder,FIG. 4(A) is a cross-sectional drawing showing the wire holder in a lockstate, FIG. 4(B) is a cross-sectional drawing showing the wire holder ina slidable state, and FIG. 4(C) is a cross-sectional drawing showing thewire holder in a detachable state (a rotatable state).

FIG. 5 is a drawing showing a structure of a shaft of the wire holder ofFIG. 4, FIG. 5(A) is an elevation drawing of the shaft, FIG. 5(B) is aside drawing of the shaft and FIG. 5(C) is a plane drawing of the shaft.

FIG. 6 is a drawing showing the wire hook, FIG. 6(A) is an elevationdrawing of the wire hook and FIG. 6(B) is a side drawing of the wirehook.

FIG. 7 is a drawing showing the antitheft wire gripper, FIG. 7(A) is anelevation drawing of the wire gripper view and FIG. 7(B) is a sidedrawing of the wire gripper.

FIG. 8 is a partial cross-sectional drawing showing a structure of therotatable gripper.

FIG. 9 is a drawing showing another embodiment of an article hangingsystem according to the present invention, FIG. 9(A) is across-sectional side drawing of the article hanging system and FIG. 9(B)is an elevation drawing of the article hanging system.

FIG. 10 is a drawing showing the structure of the rail of the articlehanging system of FIG. 9, FIG. 10(A) is a cross-sectional side drawingof the rail body and FIG. 10(B) is a cross-sectional side drawingshowing an appearance which the rail is installed on the wall.

FIG. 11 is a drawing showing a structure of the wire holder, FIG. 11(A)is a side drawing of the wire holder and FIG. 11(B) is an elevationdrawing of the wire holder.

FIG. 12 is a drawing showing another embodiment of the article hangingsystem according to the present invention.

FIG. 13 is a drawing showing an appearance which the rail shown in FIG.10(A) is installed on a wall.

FIG. 14 is a drawing showing an appearance which the rail shown in FIG.10(A) is installed on a wall.

FIG. 15 is a drawing showing an appearance which the rail shown in FIG.10(A) is installed on a wall.

FIG. 16 is a drawing showing another embodiment of an article hangingsystem according to the present invention.

DETAILED DESCRIPTION OF EMBODIMENT OF THE INVENTION

The preferred embodiments of the present invention will be described indetail with reference to the accompanying drawings.

FIG. 1 is a drawing schematically showing an article hanging systemaccording to the present invention.

An article hanging system 1 according to this embodiment comprises aceiling rail assembly 10 installed on a ceiling, a floor rail assembly40 installed on a floor, a wire holder 50 retained to the ceiling railassembly 10, a wire holder 70 retained to the floor rail assembly 40, awire 100 held to the wire holders 50, 70 and extending between the wireholders 50, 70 and a gripper 120 to which an article is fixably attachedat a desired position along the wire 100.

According to the invention, the article can be hung at variablepositions in a X-direction, a Y-direction and a Z-direction inside athree-dimensional space between the ceiling on which the ceiling railassembly 10 is installed and the floor on which the floor rail assembly40 is installed.

First, the ceiling rail assembly 10 and the floor rail assembly 40 willbe explained.

The ceiling rail assembly 10 according to this embodiment comprises achannel rail 11 extending in a lateral direction, two double-channelrails (H-shape rails) 21 extending in a longitudinal direction, an anglebracket 35 for installing the double-channel rail 21 on the ceiling anda rail connecter 33 for connecting the channel rail 11 with thedouble-channel rail 21 installed on the ceiling.

In following descriptions, the longitudinal direction shows aY-direction in figures, and the lateral direction shows a X-direction infigures.

The channel rail 11 and the double-channel rail 21 will be explained.

FIG. 2 is a drawing showing the channel rail and the double-channelrail, FIG. 2(A) is a cross-sectional drawing showing the channel railand FIG. 2(B) is a cross-sectional drawing showing the double-channelrail.

As shown in FIG. 2(A), the channel rail 11 is provided with twosidewalls 11 a and a back wall 11 b. The sidewalls 11 a and the backwall 11 b form a groove (a hollow engagement portion) 13 in which thewire holder 50 is retained. The sidewalls 11 a are formed on edgesthereof with sliding engagement portions 15, which project to oppositedirections each other. Between each sliding engagement portions 15, anopening is formed. The back wall 11 b is formed with long holes 17 atspecified intervals. The long holes 17 are for passing the railconnecter 33 when the channel rail 11 will be connected to thedouble-channel rail 21.

The back wall 11 b is formed with grooves 19 extending in the lengthdirection of the channel rail 11, the grooves 19 having a cross sectionof a substantially circle. When the channel rails 11 will be adjoined inthe length direction thereof, a connecting bar (like a long wire) isfitted into the groove 19 of each channel rail so that the channel rails11 can be adjoined straightly in the length direction thereof.

As shown in FIG. 2(B), the double-channel rail 21 has a cross section ofa H-letter, and is provided with two vertical sidewalls 21 a and apartition wall 21 b extending between centers of the vertical sidewalls21 a. Both faces of the partition wall 21 b are concave inwardly. Thevertical sidewalls 21 a and the partition wall 21 b form an upper groove(a hollow engagement portion) 23 and a lower groove (a hollow engagementportion) 25. The sidewalls 21 a are formed on edges thereof with slidingengagement portions 27, 29 respectively, which project to oppositedirections each other. Between each sliding engagement portions 27, 29,an opening is formed respectively.

The sidewalls 21 a are formed with grooves 31 extending in the lengthdirection of the rail 21, the grooves 31 having a cross section of asubstantially circle respectively. When the rails 21 will be adjoined inthe length direction thereof, a connecting bar is fitted into the groove31 of each rail 21 so that the rails 21 can be adjoined straightly inthe length direction thereof.

As shown in FIG. 1, the two double-channel rails 21 are arranged in thelongitudinal direction (the Y-direction), and fixed to a beam of theceiling by the angle bracket 35, which is fixed to the beam by a bolt 39and coupled to the upper groove 23 of the double-channel rail 21 by abolt 37 and a nut 38.

The channel rail 11 is spanned between the two double-channel rails 21in the lateral direction (the X-direction), and is slidably connected tothe double-channel rails 21 by rail connecters 33, which is passedthrough the long hole 17 of the channel rail 11 and engaged with thesliding engagement portion 29 of the double-channel rail 21, as shown inFIG. 1. Hereby, the channel rail 11 is connected to the double-channelrails 21 so as to slide in the longitudinal direction (the Y-direction)as being spanned between the two double-channel rails 21.

Next, the floor rail assembly 40 will be explained.

As shown in FIG. 1, the floor rail assembly 40 comprises two rails 11Yextending in the longitudinal direction (the Y-direction) and a channelrail 11X extending in the lateral direction (the X-direction). Each ofthe rails 11X, 11Y has a same structure as the channel rail 11 shown inFIG. 2(A) respectively.

The channel rails 11Y are installed on the floor by screws 34 in thelongitudinal direction (the Y-direction).

The channel rail 11X is spanned between the two channel rails 11Y in thelateral direction (the Y-direction), and arranged in a same position inthe X-direction and the Y-direction as that of the channel rail 11 ofthe ceiling rail assembly 10. The channel rail 11X is slidably connectedto each rail 11Y by the rail connecter 33, which is passed through thelong hole 17 of the channel rail 11X and engaged with the slidingengagement portion 15 of the channel rail 11Y, as shown in FIG. 1.Hereby, the channel rail 11X is connected to the channel rails 11Y so asto slide in the longitudinal direction (the Y-direction) as beingspanned between the two channel rails 11Y.

Next, the slide wire holder will be explained.

The slide wire holder is for holding the wire 100 to the channel rail 11of each of the rail assemblies 10, 40 at a desired position there along.As such holder, a T-shape holder 50 and a detachable holder 70 may beused (as described later in detail). The T-shape holder 50 is slidablealong the channel rail 11 freely, but undetachable from the channel rail11 neither temporarily fixable to the channel rail 11. On the otherhand, the detachable holder 70 is detachable from the channel rail 11Xas well as slidable along the channel rail 11X and temporarily fixableat a desired position along the channel rail 11X.

In the embodiment shown in FIG. 1, the T-shape holder 50 is retained tothe ceiling rail assembly 10, and the detachable holder 70 is retainedto the floor rail assembly 40.

First, the T-shape wire holder 50 will be explained.

FIG. 3 is a drawing showing a shape of a slider of the T-shape holder,FIG. 3(A) is an elevation drawing of the slider and FIG. 3(B) is a sidecross-sectional drawing of the slider.

The T-shape holder 50 comprises a slider 51 slidable along the channelrail 11 and a wire hook (shown as a number 53 in FIG. 1, not shown inFIG. 3) mounted to the slider 51. The slider 51, as shown in FIG. 3(A),is provided with a body 55 and two rollers 57 which are rotatablyassembled in the body 55. The body 55 has a sliding portion 55 aelongated in a horizontal direction of FIG. 3(A), and a threaded portion55 b extending downwardly from a center of the sliding portion 55 a. Thethreaded portion 55 b is threadedly engaged with a wire hook 53 (asshown in FIG. 1) resulting in the wire hook 53 being mounted to theslider 51. The sliding portion 55 a is formed on both ends thereof withthrough-holes 59 for mounting the rollers 57.

As shown in FIG. 3(B), the body 55 has a thickness narrower than a widthbetween each sliding engagement portions 15 of the channel rail 11. And,the roller 57 has a length longer than the width between the slidingengagement portions 15 of the channel rail 11, and narrower than a widthof the groove 13 of the channel rail 11.

Each roller 57 is composed of a first roller member 61 and a secondroller member 63. Further, the first roller member 61 is provided with aflanged roller portion 61 a and an axis portion 61 b integrated with theflanged roller portion 61 a. And, the axis portion 61 b has alarger-diameter part and a smaller-diameter part. The larger-diameterpart has a diameter substantially equal to a diameter of thethrough-hole 59 formed on the sliding portion 55 a of the body 55.

On the other hand, the second roller member 63 is provided with aflanged roller portion 63 a and a sleeve 63 b integrated with theflanged roller portion 63 a. The sleeve portion 63 b has anouter-diameter substantially equal to the diameter of the through-hole59 and an inner-diameter substantially equal to a diameter of thesmaller-diameter part of the axis portion 61 b of the first rollermember 61.

In order to assemble the holder 50 by these components, first, thesecond roller member 63 is coupled with the body 55 by inserting thesleeve portion 63 b thereof into the through-hole 59 of the slidingportion 55 a of the body 55. Then, the first roller member 61 is coupledwith the second roller member 63 coupled with the sliding portion 55 a,in a manner that the axis portion 61 b thereof is inserted into thesleeve portion 63 b of the second roller member 63 through thethrough-hole 59 of the sliding portion 55 a. And, finally, thesmaller-diameter part of the axis portion 61 b, which projects from theflanged roller portion 63 a of the second roller 63, is crushed by usinga tool and self-locked to the second roller member 63. Hereby, the bothroller members 61, 63 are fixed together to form each roller 57, and therollers 57 are rotatably assembled to the body 55.

The T-shape wire holder 50 is retained to the channel rail 11 byinserting beforehand the sliding portion 55 a of the body 55 into thegroove 13 of the channel rail 11 from an end in the length directionthereof. At this time, most of the sliding portion 55 a of the body 55enters into the groove 13 of the channel rail 11 and the threadedportion 55 b thereof projects downwardly from the opening between eachsliding engagement portions 15 of the channel rail 11. And, the flangedroller portions 61 a, 63 a of the roller members 61,63 of each roller 57run on the sliding engagement portions 15 of the channel rail 11,whereby the holder 50 can slide along the channel rail 11 freely.

As mentioned above, since each roller 57 of the T-shape holder 50 iscomposed of the roller members 61, 63 each of which the axis portion isintegrated with the roller portion, it becomes possible that the slider51 has a withstanding load about three times as high as that of aconventional holder which is assembled by using an axis and a bearingfixed thereon. And, the T-shape holder 50 has a compact shape, and ispreferable for appearance since almost all of the body 55 thereof entersin the groove 13 of the channel rail 11 and is not seen from outside.However, since the holder 50 cannot be attached and detached freely at adesired position along the channel rail 11 as mentioned above, it isrequired that the holder 50 is retained to the channel rail 11beforehand. And, the holder 50 cannot be temporarily fixed along thechannel rail 11. Accordingly, it may be suitable that the T-shape holder50 is retained to one rail assembly either the ceiling rail assembly 10or the floor rail assembly 40 (the ceiling rail assembly 10 in theembodiment), and slide by following another holder which is slidably anddetachedly retained to the other rail assembly.

Next, the detachable wire holder 70 will be explained.

FIG. 4 is a drawing showing a structure of a detachable wire holder,FIG. 4(A) is a cross-sectional drawing showing the wire holder in a lockstate, FIG. 4(B) is a cross-sectional drawing showing the wire holder ina slidable state, and FIG. 4(C) is a cross-sectional drawing showing thewire holder in a detachable state.

FIG. 5 is a drawing showing a structure of a shaft of the wire holder ofFIG. 4, FIG. 5(A) is an elevation drawing of the shaft, FIG. 5(B) is aside drawing the shaft and FIG. 5(C) is a plane drawing of the shaft.

In FIG. 4, each drawing is upside down with respect to FIG. 1 for easyunderstanding.

The wire holder 70 comprises a rail engagement member 71 slidable alongthe rail and a wire hook 110 to which the wire 100 is hooked. The railengagement member 71 has a shaft 75, a locknut 85, a washer 87 and aspring 89.

The wire holder 70 is slidably retained to the channel rail 11 and alsodetachably retained from the channel rail 11 by rotating with respect tothe channel rail 11 by a predetermined angle.

Referring to FIG. 5, the shaft 75 is explained.

The shaft 75 has a side view of a T-letter as shown in FIG. 5(A), andprovided with a head 77 protruding perpendicular to an axis direction ofthe shaft 75 on an upper end thereof. The head 77, as shown in FIG. 5(C)showing a plane view thereof, has opposite ends in a longitudinaldirection (a length direction) thereof being arcuately curved andopposite sides in a lateral direction (a width direction) thereof beingstraight and parallel each other. And, the head 77 has a length longerthan the width between the sliding engagement portions 15 of the channelrail 11 and substantially equal to the width of the groove 13 of thechannel rail 11, and has a width substantially equal to the widthbetween the sliding engagement portions 15 of the channel rail 11.Accordingly, the head 77 is rotatable in the groove 13 of the channelrail 11. When the head 77 is so rotated that the length direction ofthereof is aligned perpendicular to the length direction of the groove13 of the channel rail 11, the wire holder 70 cannot be detached fromthe channel rail 11 through the opening between the sliding engagementportions 15 of the channel rail 11 because the head 77 is restrained bythe sliding engagement portions 15 of the channel rail 11. On the otherhand, when the head 77 is so rotated in the groove 13 of the channelrail 11 that the length direction of the head 77 is aligned with thelength direction of the groove 13 of the channel rail 11, the wireholder 70 can be detached from the channel rail 11 through the openingbetween the sliding engagement portions 15 of the channel rail 11without restrained by the sliding engagement portions 15.

The shaft 75 is further provided with a rotation preventive portion 79under the head 77. The rotation preventive portion 79 has a plane viewof a square, each of the edges of the square having a lengthsubstantially equal to the width between the sliding engagement portions15 of the channel rail 11, and has a certain thickness. And, therotation preventive portion 79 has opposite sides coincident with thesidewalls of the head 77 in the width direction thereof.

Further, the shaft 75 is provided with a larger-diameter threadedportion 81 and a smaller-diameter threaded portion 83 under the rotationpreventive portion 79 in this order. As shown in FIG. 4, the locknut 85is threadedly engaged with the larger-diameter threaded portion 81. And,the washer 87 and the spring 89 are fitted onto the shaft 75 over thelocknut 85 in this order. The spring 89 is fitted onto the shaft 75between the washer 87 and the locknut 85, and biases the washer 87toward the head 77 (in the upper direction in the figure) with respectto the locknut 85.

And, the smaller-diameter threaded portion 83 is threadedly engaged withthe wire hook 110.

Now, referring to FIG. 4, an operation of the wire holder 70 will beexplained, the wire holder 70 assuming a lock state, a slidable stateand a detachable state.

First, the lock state as shown in FIG. 4(A) will be explained.

In the lock state, the holder 70 is unslidably and undetachably fixed tothe channel rail 11. The head 77 of the holder 70 is inserted into thegroove 13 of the channel rail 11, and engaged with the slidingengagement portion 15 of the channel rail 11. At this time, the rotationpreventive portion 79 of the holder 70 is positioned between the slidingengagement portions 15 of the channel rail 11. The locknut 85 isthreadedly advanced onto the larger-diameter portion 81 toward the head77 as close as possible. The washer 87 is biased toward the head 77 withrespect to the locknut 85 by the spring 89, and pressed toward the head77 by the locknut 85. As a result, the sliding engagement portion 15 ofthe channel rail 11 are tightly held between the head 77 and the washer87 so that the rail engagement member 71 of the holder 70 is unslidablyand undetachably fixed to the channel rail 11.

Next, the slidable state as shown in FIG. 4(B) will be explained.

In the slidable state, the holder 70 is slidably but unrotatablyattached to the channel rail 11. In other ward, the holder 70 cannot bedetached from the channel rail 11. The locknut 85 is threadedly advancedonto the larger-diameter portion 81 away from the head 77 for apredetermined distance, and is biased downwardly with respect to thesliding engagement portion 15 of the channel rail 11 by the spring 89.Hereby, the head 77 is biased downwardly and abuts on the slidingengagement portion 15 of the channel rail 11. At a result, between thewasher 87 and an upper end of the locknut 85, a clearance H is formed.In other words, the washer 87 is biased toward the rail engagementportion 15 by only a bias force of the spring 89.

In this state, since the sliding engagement portion 15 of the channelrail 11 is held between the head 77 and the washer 87 by only the biasforce of the spring 89, when the holder 70 is forced to be slid alongthe channel rail 11 by applying a force larger than the bias force ofthe spring 89, the holder 70 can slide along the channel rail 11. Atthis time, when the holder 70 will be pressed upwardly against the biasforce of the spring 89, a smooth slide of the holder 70 becomespossible.

On the other hand, when the holder 70 will be pressed upwardly againstthe bias force of the spring 89, the upper end of the locknut 85 abutson the under surface of the washer 87, as shown in a double-dashed linein the figure. As a result, in the groove 13 of the rail, a clearancehaving a height equal to that of the clearance H is formed between thehead 77 and the sliding engagement portion 15 of the channel rail 11.Since the clearance H has a height (for example, 0.8 mm) smaller thanthe thickness (for example 1.00 mm) of the rotation preventive portion79, a whole of the rotation preventive portion 79 cannot enter into thegroove 13 of the channel rail 11. So, when the holder 70 will be rotatedwith respect to the channel rail 11, since the rotation preventiveportion 79 is restrained by the sliding engagement portion 15 of thechannel rail 11, the holder 70 cannot be rotated with respect to thechannel rail 11. That is, the holder 70 cannot be detached from thechannel rail 11.

Next, the detachable state as shown in FIG. 4(C) will be explained.

In this state, the holder 70 is rotatably and also detachably attachedto the channel rail 11. In the state, the locknut 85 is furtherthreadedly advanced onto the larger-diameter portion 81 away from thehead 77 for a longer predetermined distance. The locknut 85 is furtherbiased downwardly with respect to the channel rail engagement portion 15of the channel rail 11 by the spring 89. As a result, a larger clearanceH′ is formed between the washer 87 and the locknut 85.

When the holder 70 will be pressed upwardly against the bias force ofthe spring 89, the locknut 85 abuts on the under surface of the washer87, as shown in a double-dashed line in the figure. As a result, in thegroove 13 of the channel rail 11, a larger clearance having a heightequal to that of the clearance H′ (the height H′ is larger than theheight H shown in FIG. 4(B), for example 1.2 mm) is formed between thehead 77 and the sliding engagement portion 15 of the channel rail 11.Hereby, the whole of the rotation preventive portion 79 can enter intothe groove 13 of the channel rail 11 and be rotated therein.Accordingly, when the holder 70 will be rotated with respect to thechannel rail 11, the rotation preventive portion 79 (that is the holder70) can be rotated in the groove 13 of the channel rail 11 without beingrestrained by the sliding engagement portion 15 of the channel rail 11.Then, when the holder 70 will be rotated with respect to the channelrail 11 by substantially 90°, since the length direction of the head 77aligns with the length direction of the groove 13 of the channel rail11, the head 77 of the holder 70 can be detached from the channel rail11 through the space between the sliding engagement portions 15 of thechannel rail 11.

As explained above, the detachable wire holder 70 can be detachablyattached at a desired position along the channel rail 11. For change ofthe attachment position of the holder 70, firstly, the holder 70 is madeto be the slidable state and then slid to a desired position along thechannel rail 11. And, next, it is made to be the lock state and thenfixed to the position temporarily. Accordingly, when the wire holder 70and the T-shape holder 50 are retained to the floor rail assembly 40 andthe ceiling rail assembly 10 respectively, it will be possible that bothends of the wire are located at a same location in the X-direction.

Next, the wire hook 110 will be explained.

The wire hook 110 is mounted to the detachable wire holder 70, and isfor hooking the wire so as not to slip the wire 100 from the wire holder70.

FIG. 6 is a drawing showing the wire hook, FIG. 6(A) is an elevationdrawing of the wire hook and FIG. 6(B) is a side drawing of the wirehook.

The wire hook 110 is provided with a sleeve member 111, a hook member113 from which the wire 100 is hooked and a slipping preventive member115. The sleeve member 111 is formed on an upper end thereof with aninner thread, with which the smaller-diameter portion 83 of the wireholder 70 is threadedly engaged, resulting in the wire hook 110 beingmounted to the wire holder 70. The hook member 113 is mounted to thelower end of the sleeve member 111.

As shown in FIG. 6(B), the slipping preventive member 115 is made byfolding an elongate stainless steel wire into substantially a V-letterand inserting both ends of the wire into holes formed at a cylindricalperiphery of the sleeve member 111. A pointed end 115 a of the slippingpreventive member 115 is contacted with a distal end 113 a of the hookmember 113 from inside of the hook member 113. Hereby, a space betweenthe distal end 113 a of the hook member 113 and the cylindricalperiphery of the sleeve member 111 is closed.

When the slipping preventive member 115 is pressed inwardly until aposition as shown in a dashed-line in FIG. 6(A), the space between thedistal end 113 a of the hook member 113 and the cylindrical periphery ofthe sleeve member 111 is opened. And, when slipping preventive member115 is further pressed inwardly, the both ends of the slippingpreventive member 115 are spread outwardly by the cylindrical peripheryof the sleeve member 111. Then, when the force by which the slippingpreventive member 115 is pressed inwardly is released, the slippingpreventive member 115 is biased by the cylindrical periphery of thesleeve member 111 as shown in an arrow in FIG. 6(A), and is returned toits original position, in which the pointed end 115 a of the slippingpreventive member 115 contacts with the distal end 113 a of the hookmember 113. Hereby, the space between the distal end 113 a of the hookmember 113 and the cylindrical periphery of the sleeve member 111 isclosed.

As mentioned above, in the wire hook 110, the space between the distalend 113 a of the hook member 113 and the cylindrical periphery of thesleeve member 111 can be closed by a simple action such that theslipping preventive member 115 is biased outwardly by the cylindricalperiphery of the sleeve member 111.

Next, the wire 100 will be explained.

For the wire 100, a stranded wire which a plurality of stainless wiresis stranded may be used. In the embodiment, an upper end of the wire 100is detachably held to the wire hook 53 of the T-shape wire holder 50which is slidably mounted to the channel rail 11. The wire 100 is formedon a lower end thereof with a ring, to which the wire hook 110 of thedetachable wire holder 70 is hooked.

At the middle of the wire 100, the antitheft wire gripper 120 ismounted. The antitheft wire gripper 120 can slide along the wire 100,and be temporarily fixed at a desired position (height).

Next, the antitheft wire gripper 120 will be explained.

The antitheft wire gripper 120, to which various article such as a goodsexhibited in a shop, a hanger and a shelf is hung, can be fixablyattached at a desired position (height) along the wire 100, and also canprevent the article hung thereby from being stolen.

FIG. 7 is a drawing showing the antitheft wire gripper, FIG. 7(A) is anelevation drawing of the wire gripper view and FIG. 7(B) is a sidedrawing of the wire gripper.

The antitheft wire gripper 120 comprises a gripper sleeve 121, a hook123 and a hook cover 125. The gripper sleeve 121 has a grip mechanismcapable of being fixably attached at a desired position along the wire100. For the grip mechanism, a well-known mechanism (for example,Japanese Laid-Open Patent number hei 11-113702) may be used.

The hook cover 125 is so served that a space between a distal end 123 aof the hook 123 and an outer surface of the gripper sleeve 121 isclosed, and has a sliding portion 125 a slidable along the grippersleeve 121 and a cover portion 125 b. The cover portion 125 b is formedon a distal end thereof with a hole 126. When the sliding portion 125 ais slid onto the gripper sleeve 121 downwardly and upwardly, the spacebetween the distal end 123 a of the hook 123 and the outer surface ofthe gripper sleeve 121 is opened and closed, with the distal end 123 aof the hook 123 coming in and out of the hole 126 of the cover portion125 b. The sliding portion 125 a can be temporarily fixed to the grippersleeve 121 by a set-screw 127.

In a state as shown in FIG. 7, after the set-screw 127 is loosen, thecover portion 125 a is slid upwardly onto the gripper sleeve 121,resulting in the space for hooking the article to the hook 123 beingopened between the distal end 123 a of the hook 123 and the grippersleeve 121. Then, the cover portion 125 a is slid downwardly onto thegripper sleeve 121 with the distal end 123 a of the hook 123 beingentered into the hole 126 of the cover portion 125 a, and then theset-screw 127 is tighten using a specified tool which is accommodated tothe set-screw 127, resulting in the hook cover 125 being temporarilyfixed to the gripper sleeve 121.

As mentioned above, since a specified tool (for example, a hexagonwrench) which is accommodated to the set-screw 127 is required forsliding the hook cover 125 with respect to the gripper sleeve 121 inorder to open the space between the distal end 123 a of the hook 123 andthe gripper sleeve 121, the article is not allowed to be stolen from thegripper 120 easily.

Next, the rotatable gripper will be explained. The rotatable gripper,from which various articles are hanged, is fixably attached at a desiredposition (height) along the wire 100. The article is hung to therotatable gripper 140 so as to be rotated with respect to the railfreely.

FIG. 8 is a partial cross-sectional drawing showing a structure of therotatable gripper.

The rotatable gripper 140 comprises a gripper sleeve 141 and a hook (notshown) to which an article is hooked. The gripper sleeve 141 has a gripmechanism capable of being fixably attached at a desired position alongthe wire 100. For the grip mechanism, a well-known mechanism may beused.

The gripper sleeve 141 is provided with an outer ring 143 and an innerring 145 which is fit into the outer ring 143. Both rings are fit into alower end of the gripper sleeve 141, and the outer ring 143 is fixed tothe gripper sleeve 141 by a pin. The outer ring 143 is formed on aninner surface thereof with a step. The inner ring 145 is formed on anupper end thereof with a flange extending outwardly, and on a lower endwith a threaded portion 146. The inner ring 145 is fit into the outerring 143 in a manner that the threaded portion 146 thereof is projectedfrom the lower end of the outer ring 143. The threaded portion 146 isthreadedly engaged with an inner thread formed on a wire hook (forexample, the wire hook as shown in FIG. 6) resulting in the gripper 140is coupled to the wire hook.

The gripper sleeve 141 is further provided with a bush 147 disposedbetween the step of the outer ring 143 and the flange of the inner ring145, and is made of a low-frictional material such as a fluoro-plastic.

Hereby, the inner ring 145 is held to the outer ring 143 so as to berotated with respect to the outer ring 143. Therefore, the hook engagedwith the inner ring 145 can be rotated with respect to the grippersleeve 141 fixed to the outer ring 143. That is, an article which ishung by the hook can be rotated with respect to the gripper sleeve 141(the wire) freely. In the case that the article is heavy and a loadapplied to the gripper is high, the gripper 140 can hold the articlestably if the hook will be rotated with respect to the gripper sleeve141.

Referring to FIG. 1 again, one embodiment for changing an exhibitposition of an article which is hung from the wire gripper 120 in thearticle hanging system 1 will be explained.

In order to change an exhibit position in the X-direction, thedetachable wire holder 70 to which the wire 100 is held at the lower endthereof is made to be in the slidable state, and then, is slid to adesired position along the lateral channel rail 11X of the floor railassembly 40. Herewith, the T-shape wire holder 50 to which the wire 100is held at the upper end thereof is slid along the channel rail 11 ofthe ceiling rail assembly 10 by following the wire holder 70.

In order to change an exhibit position in the Y-direction, the cannelrail 11 is slid to a desired position along the double-channel rails 21.At the same time, the channel rail 11X of the floor rail assembly 40 isslid to a desired position along the channel rails 11Y.

In order to change an exhibit position in the Z-direction, the wiregripper 120 is made to be the slidable state, and is slid to a desiredposition (height) along the wire 100. Then, the gripper 120 is made tobe the lock state and temporarily fixed to the desired position.

While the wire 100 is slid along the floor rail assembly 40 at the lowerend thereof in this present embodiment, the wire 100 may be hung fromthe ceiling rail assembly 10 without the lower end of the wire 100 beingrestrained.

Next, another embodiment of an article hanging system according to thepresent invention is explained.

FIG. 9 is a drawing showing another embodiment of an article hangingsystem according to the present invention, FIG. 9(A) is across-sectional side drawing of the article hanging system and FIG. 9(B)is an elevation drawing of the article hanging system.

The article hanging system 201 according to this embodiment comprises arail 210 installed on a wall W, a wire holder 240 capable of slidingalong the rail 210, a wire 260 held to the wire holder 240, and agripper 270 for hanging the article at a desired position along the wire260.

First, a structure of the rail 210 will be explained.

FIG. 10 is a drawing showing the structure of the rail of the articlehanging system of FIG. 9, FIG. 10(A) is a cross-sectional side drawingof the rail body and FIG. 10(B) is a cross-sectional side drawingshowing an appearance which the rail is installed on the wall.

The rail 210 has a long back plate 211, with a rail channel 213extending in a length direction of the rail 210, the rail channel 213being formed on a lower half-face of the back plate 211. The railchannel 213 has an inner groove 221 formed by the back plate 211 and twosidewalls 215 perpendicular to the back plate 211. The sidewalls 215 areformed on edges thereof with inside engagement portions 217, whichprojects to opposite directions each other. Between the both insideengagement portions 217, an opening 219 is opened. The inner groove 221has a cross section of a substantially square. The sidewalls 215 areformed on edges thereof with outside engagement portions 223 projectingto opposite directions.

Additionally, the rail cannel 213 has some grooves 225 extending to thelength direction of the rail 210 and having a cross section of asubstantially circle. When the rails 210 will be adjoined, connectingbars are fitted into the grooves 225 so that the rails 210 can beadjoined straightly.

And, the back plate 211 is formed on an upper half-plane in the widthdirection thereof with holes 233 at predetermined intervals, and with awall panel engagement portion 231 perpendicular to the back plate 211.

Referring to the FIG. 10(B), an installing process of the rail 210 onthe wall will be explained.

First, the back plate 211 of the rail 210 is arranged horizontally onthe wall at a predetermined height with the rail cannel 213 thereofbeing lower-side, and then bolts S are passed through the hole 233 ofthe back plate 211 and screwed to the wall W. Hereby, the rail 210 ismounted on the wall W, with the opening 219 of the rail channel 213being opened in a horizontal direction. Next, a plaster board B is seton the upper sidewall 215 of the rail channel 213, and held between theoutside engagement portion 223 of the upper sidewall 215 and the wallpanel engagement portion 231. Then, the plaster board B is fixed to thewall by a well-known way. Then, another plaster board B is set under thelower sidewall 215 and engaged with the outside engagement portion 223of the lower sidewall 215, and then fixed to the wall by a well-knownway.

Next, the wire holder 240 will be explained.

FIG. 11 is a drawing showing a structure of the wire holder, FIG. 11(A)is a side drawing of the wire holder and FIG. 11(B) is an elevationdrawing of the wire holder.

The wire holder 240 is provided with a slider 241 retained in the railchannel 213 of the rail 210, and a wire hook 251 for hooking the wire.

The wire hook 251 has a through-hole 253 extending to a longitudinaldirection thereof (in a gravitational direction). The through-hole 253is for passing the wire 260 through, and has a larger-diameter threadedportion 253 a, a smaller-diameter portion 253 b and a step 255 betweenthe larger-diameter portion 253 a and the smaller-diameter portion 253b.

As shown in FIG. 9, the wire 260 has a lock portion 261 of a diameterlarger than a diameter of the wire 260 at one end thereof. The wire 260is held to the wire hook 251 by engagement of the lock portion 261 ofthe wire 260 with the step 255 of the wire hook 251. The wire gripper270 having a hook 271 (an article engagement portion) is attachable to adesired position along the wire 260 passed from the wire holder 240. Forsuch wire gripper 270, a well-known wire gripper (for example, the wiregripper as shown in FIG. 7) may be used.

Referring to the FIG. 11 again, the wire holder 240 will be explained.

As mentioned above, the wire holder 240 is provided with a slider 241which protrudes from a side surface of the wire hook 251. The slider 241has a shaft portion 243 protruding in a horizontal direction from theside surface of the wire hook 251, and a sliding portion 245 at a distalend of the shaft portion 243. The sliding portion 245 is extending in alongitudinal direction (a gravitational direction), and, as shown inFIG. 11(B), has opposite ends 247 in the longitudinal direction (alength direction) thereof being arcuately curved, and opposite sides inthe lateral direction (a width direction) thereof being straight andparallel. The sliding portion 245 has a length slightly smaller than awidth of the inner groove 221 of the rail channel 213 (a distancebetween both sidewalls 215), with the each curved end 247 thereof havinga curvature slightly smaller than a curvature of a circle which has adiameter substantially equal to the width of the inner groove 221. And,the sliding portion 245 has a width substantially equal to the width ofthe opening 219 of the rail channel 213(a distance between the bothinside engagement portions 217).

In addition, the sliding portion 245 has a thickness substantially equalto a depth of the inner groove 221.

The shaft portion 243 is column-shaped, and has a diameter slightlysmaller than the width of the opening 219 of the rail channel 213 (adistance between the both inside engagement portions 217) and a lengthsubstantially equal to the thickness of the inside engagement portions217 of the rail channel 213.

Referring to FIG. 9, an attachment and detachment process of the wireholder 240 to the rail 210 will be explained.

In order to attach the wire holder 240 to the rail 210, first, thelength direction of the sliding portion 245 is aligned with a lengthdirection of the opening 219 of the rail channel 213, and then, thesliding portion 245 is passed through the opening 219. Since the widthof the sliding portion 245 and the diameter of the shaft portion 243 aresubstantially equal to the width of the opening 219, the sliding portion245 can enter into the inner groove 221 through the opening 219 of therail channel 213. After whole of the sliding portion 245 enters into theinner groove 221, as shown in an arrow in FIG. 9(B), the sliding portion245 will be rotated by 90°. At this time, since the sliding portion 245has the diameter slightly shorter than the width of the inner groove221, the sliding portion 245 can be rotated therein. In addition, sincethe shaft portion 243 has a diameter substantially equal to the width ofthe opening 219, the shaft portion 243 can also be rotated therein.

After the sliding portion 245 is rotated by 90° as shown in FIG. 9(A),since the curved ends 247 are engaged with the inside engagementportions 217 of the rail channel 213, the sliding portion 245 cannot bedetached from the inner groove 221 through the opening 219. And, thesliding portion 245 is slidably retained in the inner groove 221 of therail channel 213 while the curved ends 247 thereof being contacted withthe sidewalls 215 of the rail channel 213, whereby smooth sliding of theslider 241 becomes possible.

Here, the sliding portion 245 is extending to the gravitationaldirection after rotating by 90°. In other word, the sliding portion 245is extending in the gravitational direction when the wire hook 251 isextending to the gravitational direction by straining the wire 260 inthe gravitationally direction due to a weight of an article hung to thewire gripper 270. Accordingly, an article hung by the gripper 270 allowsthe wire holder 240 to be undetachably attached to the rail 210.

In addition, since the shaft portion 243 has the length substantiallyequal to the thickness of the inside engagement portion 217, the wireholder 240 is prevented from being swung to a depth direction of therail channel 213.

Accordingly, the sliding portion 245 can come in and out of the innergroove 221 of the rail channel 213 by aligning the length directionthereof with the length direction of the opening 219 of the rail channel213. And, after coming the sliding portion 245 in the inner groove 221,the wire holder 240 is so rotated that the length direction thereof isaligned with the length direction of the opening 219, whereby the wireholder 240 becomes undetachable from the rail 210.

As mentioned above, the sliding portion 245 and the shaft portion 243 ofthe wire holder 240 are rotatably retained in the inner groove 221 andopening 219 of the rail channel 213. Therefore, when the wire holder 240will be slid along the rail 210 by pulling a lower end of the wire 260,the slider 241 can slide along the rail as being tilted with respect tothe rail 210.

FIG. 12 is a drawing showing another embodiment of the article hangingsystem according to the present invention.

The article hanging system 301 in the embodiment comprises the rail 210as shown in FIG. 10, the wire holder 240 as shown in FIG. 11, and a hook310. In this embodiment, the wire holder 240 is retained to the rail 210upside down. And, the hook 310 is directly attached to the wire holder240 by threadedly engaging with the larger-diameter threaded portion 253a of the wire holder 240. An article is hung by the hook 310.

Another embodiments of a way for attachment of the rail 210 shown inFIG. 10(A) to a wall will be explained.

FIG. 13 to FIG. 15 are drawings each showing an appearance which therail shown in FIG. 10(A) is installed on a wall.

FIG. 13 shows an embodiment which the rail is installed on an upper endof the wall beforehand.

The rail 210 is arranged to a corner between a ceiling C and a woodysubstrate W, with the rail channel 213 thereof being lower-side. Theback plate 211 of the rail 210 is fixed to the woody substrate W by ascrew S. Two plaster boards B are laid under the lower sidewall 215 ofthe rail channel 213. The front plaster boards B is held between theoutside engagement portion 223 of the rail channel 213 and the wallpanel engagement portion 231, and the back plaster board B is heldbetween the woody substrate W and the front plaster board B.

FIG. 14 shows another embodiment which the rail is installed on an upperend of the wall beforehand.

In the embodiment, the rail 210 is fixed to an angle bracket A by a boltS with the rail channel 213 thereof being lower-side. The angle bracketA is coupled to another angle bracket A by a bolt S, the later anglebracket A being fixed by welding to a concrete building frame W. Twoceiling boards C are fixed to a beam of the ceiling while being held bythe upper outside engagement portion 223 of the upper sidewall 215 andthe wall panel engagement portion 231. Two plaster boards B are laidunder the lower outside engagement portion 223 of the rail 210 withbeing engaged with the outside engagement portion 223 of the lowersidewall 215. Between the plaster board B and the building frame W,plaster is filled.

FIG. 15 shows another embodiment which the rail is installed on an upperend of the wall beforehand.

In the embodiment, the rail 210 is fixed to an angle bracket A by a boltS with the rail channel 213 thereof being lower-side. The angle bracketA is coupled to another angle bracket A by a bolt S, the later anglebracket A being fixed by welding to a concrete building frame. Twoceiling boards C are fixed to a beam of the ceiling with being held bythe upper outside engagement portion 223 of the upper sidewall 215 andthe wall panel engagement portion 231. A marble board is lied under thelower sidewall 215 of the rail channel 213 with being engaged with thelower outside engagement portion 223 of the lower sidewall 215, andfixed to an angle bracket A. The angle bracket A is coupled to anotherangle bracket A, the later angle bracket A being fixed by welding to aconcrete building frame, by using a bolt S and anchor K.

FIG. 16 is a drawing showing another embodiment of an article hangingsystem according to the present invention.

The article hanging system 401 in this embodiment is for installing therail 210 on a ceiling C. The system 401 comprises the rail 210 installedon the ceiling C, a slider 441 capable of sliding along the rail 210, awire 460 held to the slider 441 and a gripper (not shown) for hanging anarticle at a desired position along the wire.

For the rail 210, the rail as shown in FIG. 10 may be used. In thisembodiment, the rail 210 is installed on ceiling by fixing the backplate 211 thereof to the ceiling by a bolt.

The slider 441 has a sliding portion 445 and a shaft portion 443, eachportion having a same shape as the sliding portion 245 and the shaftportion 243 of the slider 241, as shown FIG. 11, respectively. Theslider 441 has a through hole through which the wire 460 is passed, thethrough hole extending to the length direction thereof. The through holehas a larger diameter threaded hole, a smaller-diameter hole and a stepbetween the both holes.

The wire 460 has a locking portion having a diameter larger than adiameter of the wire 460. The wire 460 is held to the slider 441 byengaging the locking portion thereof with the step of the through hole.

The slider 441 has a same attachment and detachment manner as that ofthe slider 241 as shown in FIG. 11.

1. A wire hook comprising: a sleeve member comprising an attachmentportion, for attachment of another member, at a first end of said sleevemember; a hook which is adapted to hook a wire, and which is provided ata second end of said sleeve member; and a slipping preventive memberwhich closes a space between said sleeve member and a distal end of saidhook to prevent the wire from slipping through the space, and which ismovable to open the space; wherein said slipping preventive membercomprises a V-shaped lever having a distal end at a point of theV-shaped lever and two proximal ends, and said sleeve member is shapedsuch that when the slipping preventive member is moved to open thespace, an outer surface of said sleeve member widens the V-shaped leverby pushing the proximal ends of the V-shaped lever apart, therebybiasing the distal end of said slipping preventive member toward thedistal end of said hook, to cause the distal end of said slippingpreventive member to contact the distal end of said hook so as to closethe space.
 2. The wire hook according to claim 1, wherein the outersurface of said sleeve member is cylindrical.
 3. The wire hook accordingto claim 2, wherein portions of the proximal ends of said slippingpreventive member are inserted into the sleeve member.
 4. The wire hookaccording to claim 2, wherein the slipping preventive member comprises awire, which is folded to form the V-shaped lever.
 5. The wire hookaccording to claim 4, wherein ends of the wire are inserted into saidsleeve member.
 6. The wire hook according to claim 1, wherein portionsof the proximal ends of the slipping preventive member are inserted intothe sleeve member.
 7. The wire hook according to claim 1, wherein theslipping preventive member comprises a wire, which is folded to form theV-shaped lever.
 8. The wire hook according to claim 7, wherein ends ofthe wire are inserted into said sleeve member.
 9. The wire hookaccording to claim 1, wherein the attachment portion comprises athreaded portion in the first end of the sleeve member.
 10. The wirehook according to claim 1, wherein the distal end of said slippingpreventive member contacts the distal end of said hook at an inner sideof the distal end of said hook.